co (3+1).(2+1) = 4 . 3 = 12 (uoc)
nha ban ,thanks
có:(3+1).(2+1)=12 ước
ủng hộ nha bạn!
Cho a la mot hop so.biet khi phan tich ra thua so nguyen to thi a chi chua 2 thua so nguyen to la p1 va p2. Biet a mu 3 co tat ca 40 uoc tu nhien.
Hoi a mu 2 co bao nhieu uoc tu nhien.
Ai giai nhanh minh tick.giai ra nhe
so 3 mu 3 nhan 7 mu 2 co bao nhieu uoc nguyen duong
1) co bao nhieu boi cua 4 tu 10 den 200
2) co bao nhieu so vua la boi cua 5 vua la uoc cua 50
3) tim cac so tu nhien N sao cho :
A) N-1 la uoc cua 28
B) 2 nhan N +1 la uoc cua 18
C) N nhan (N +2)=8
3 like cho nguoi giai nhanh nhat 3 cau tren . Giai ki nhe
cho a = 7 mu 2 x 11 mu 3.Trong cac so 7a, 11a va 13a, so nao co nhieu uoc nhat
cho B la mot so tu nhien .Biet B =tich cua axby ; a,b la cac so nguyen to khac nhau ;x,y la cac so tu nhien khac 0 . B2co 15 uoc Hoi B3co bao nhieu uoc
so chinh phuong la so bang binh phuong cua mot so tu nhien ( vi du 0 ,1,2,4,9,16,...0) moi tong sau day co so chinh phuong ko
a) 1mu 3 +2 mu 3
b)1mu 3+2mu 3 +3 mu 3
c)1 mu 3+ 2 mu 3 + 3 mu 3 +4 mu 3
tai minh ko biet go dau mu !
Cho so tu nhien B=: axby,trong do a,b la hai so nguyen to khac nhau,x,y la cac so tu nhien khac 0. Biet B2 co 15 uoc.Vay B3 co bao nhieu uoc?
cho n chi co 2 uoc nguyen to . n^2 co 35 uoc so tu nhien . hoi n^4 co bao nhieu uoc so tu nhien
viet tich 2 nhan 4 nhan 8 nhan 16 nhan 256 duoi dang 1 luy thua voi so mu co so tu nhien nho nhat co the co
